Patents Represented by Attorney Raymond H. Nelson

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  • Oxo alcohol synthesis with rhodium catalyst recycle
    Patent number: 4275252
    Abstract: Alcohol may be synthesized from olefinic hydrocarbons by treating the hydrocarbon with carbon monoxide and hydrogen in a hydroformylation zone using a rhodium complex catalyst to effect the reaction. Following formation of the alcohol, the catalyst may be extracted from the alcohol by treatment with an aqueous ammonium hydroxide solution. The aqueous ammonium hydroxide solution containing the catalyst is then stripped of ammonia by treatment with a stripping agent such as carbon monoxide. A major portion of the alcohol is recovered while the remaining portion is used as an extractant to recover the rhodium complex catalyst from the aqueous ammonium hydroxide solution and thereafter is recycled to the hydroformylation zone.
    Type: Grant
    Filed: February 28, 1980
    Date of Patent: June 23, 1981
    Assignee: UOP Inc.
    Inventors: Tamotsu Imai, Edwin H. Homeier, David E. Mackowiak
  • Preparation of 2,4-Di-t-alkylphenol
    Patent number: 4275249
    Abstract: A process for introducing a plurality of alkyl groups into the aromatic ring of a hydroxy-substituted aromatic compound comprises contacting said aromatic compound with an olefin in the presence of alumina or halided alumina as catalyst and recovering the product. When said aromatic compound is phenol, said olefin is isobutylene, and said catalyst is fluorided or chlorided alumina, 2,4-di-t-butylphenol is formed with superior selectivity.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: June 23, 1981
    Assignee: UOP Inc.
    Inventor: Bruce E. Firth
  • Chitin- and chitosan-based immobilized metal catalysts
    Patent number: 4274980
    Abstract: A composition comprising chitin or chitosan bearing a metal or mixture of metals deposited thereon in a highly dispersed state so as to immobilize said metal or mixture of metals is an effective catalyst for processes in which said metal or mixture of metals shows catalytic properties.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: June 23, 1981
    Assignee: UOP Inc.
    Inventor: Blaise J. Arena
  • Production of dialkyl formamide
    Patent number: 4269998
    Abstract: Dialkyl formamides may be prepared by treating the corresponding dialkyl amine with carbon dioxide and hydrogen in the presence of a transition metal hydrogenation catalyst at a temperature in the range of from about 100.degree. to about 400.degree. C. and a pressure in the range of from about 5 to about 300 atmospheres. The reaction is exemplified by treating dialkyl amine with carbon dioxide and water in the presence of a copper chromite to form N,N-dimethylformamide.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: May 26, 1981
    Assignee: UOP Inc.
    Inventor: Tamotsu Imai
  • Recovery in titanium metal values by solvent extraction
    Patent number: 4269809
    Abstract: Titanium metal values may be recovered from a titanium bearing source such as an ilmenite ore by subjecting the source to a reductive roast and leaching the reduced source with a halogen containing compound such as hydrochloric acid. The soluble titanium halide is then extracted from the leach liquor by utilizing an organophosphoric acid such as mono-2-ethylhexylphosphoric acid. The extracted titanium may then be stripped from the loaded organic acid solution by treating the solution with a mixture of hydrogen peroxide and an inorganic acid. Thereafter the desired titanium metal value may be recovered from the acid solution by any means known in the art such as hydrolysis.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: May 26, 1981
    Assignee: UOP Inc.
    Inventors: William K. Tolley, William C. Laughlin
  • Support matrices for immobilized enzymes
    Patent number: 4268419
    Abstract: An improved method of preparing support matrices for immobilization of reactive chemical entities, such as enzymes, comprises deposition of a polyamine on core support, such as an inorganic oxide, contacting the polyamine-coated core support with a bifunctional reagent which cross-links the polyamine and provides pendant functional groups, and recovering the matrix, wherein the improvement comprises means of depositing the polyamine as a thin, uniform film.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: May 19, 1981
    Assignee: UOP Inc.
    Inventor: Ronald P. Rohrbach
  • Support matrices for immobilized enzymes
    Patent number: 4268423
    Abstract: An improved method of preparing support matrices for immobilization of reactive chemical entities, such as enzymes, comprises deposition of a polyamine on a core support, such as an inorganic oxide, contacting the polyamine-coated core support with a bifunctional reagent which cross-links the polyamine and provides pendant functional groups, and recovering the matrix, wherein the improvement comprises deposition of the polyamine as a thin, uniform film from solvents of low surface tension.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: May 19, 1981
    Assignee: UOP Inc.
    Inventors: Ronald P. Rohrbach, Mary Maliarik
  • Hydration of olefinic compounds with dilute sulfuric acid and cobalt sulfate
    Patent number: 4267397
    Abstract: Olefinic compounds, and particularly olefinic hydrocarbons, containing from 2 to about 4 carbon atoms may be subjected to a direct hydration process utilizing a dilute aqueous sulfuric acid to treat the olefin at reaction conditions which will include a temperature in the range of from about 100.degree. to about 300.degree. C. and a pressure in the range of from about 1 to about 250 atmospheres. In addition, if so desired, a transition metal sulfate may also be present in the reaction mixture.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: May 12, 1981
    Assignee: UOP Inc.
    Inventors: Robert J. Schmidt, Tamotsu Imai
  • Recovery of cobalt values
    Patent number: 4261737
    Abstract: The present process involves an improvement in the hydrometallurgical recovery of metal values from metal bearing sources such as ores and the like. The desired metal values are recovered by subjecting a metal bearing source to a reductive roast in a reducing atmosphere after having treated said source with at least one additive. Following the reductive roast the reduced metal bearing source is cooled and extracted by a leaching operation. The separation of various metal values in the metal bearing source may be effected by adding a solid adsorbent to the leach solution whereby selective metal ions are adsorbed thereon. The improvement in the present process comprises pretreating the solid adsorbent prior to use thereof with an acid thereby increasing the loading capacity of the metal ions in the adsorbents as well as kinetics of metal adsorption.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: April 14, 1981
    Assignee: UOP Inc.
    Inventors: James A. Bradbury, Richard T. Um
  • Preparation of alkylphenols
    Patent number: 4260833
    Abstract: A process for introducing a plurality of alkyl groups into the aromatic ring of a hydroxy-substituted aromatic compound comprises contacting said aromatic compound with an olefin in the presence of a lithiated alumina as catalyst and recovering the product. When said aromatic compound is phenol, said olefin is iso-butylene, and said catalyst is lithiated alumina, 2,4-di-t-butylphenol is formed with superior selectivity.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: April 7, 1981
    Assignee: UOP Inc.
    Inventor: Bruce E. Firth
  • Method of purification of glucose isomerase
    Patent number: 4256838
    Abstract: A process for purifying an enzyme such as glucose isomerase which comprises precipitating nucleic acids from a cell-free, heat-treated enzyme solution in a suitable buffer and chromatographing the supernatant on a cellulosic medium. Subsequent chromatography on a hydrophilic, molecular-sieve medium affords enzyme of about 90% purity.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: March 17, 1981
    Assignee: UOP Inc.
    Inventors: Denise M. Jackson, Yoshihisa Tsuda, Vida Winans
  • Production of amino substituted aromatic compounds
    Patent number: 4256670
    Abstract: Amino substituted aromatic compounds may be prepared by treating the corresponding nitro substituted aromatic compound at an elevated temperature and pressure in the presence of a catalytic composition of matter comprising metal catalyst complexes selected from the group consisting of metal phthalocyanines and metal carbonyls in which the metal portion of the compound is a Group VIII metal. Reaction conditions which may be employed will include temperatures ranging from about 90.degree. to about 300.degree. C. and pressures ranging from about 5 to about 5000 atmospheres.
    Type: Grant
    Filed: November 15, 1979
    Date of Patent: March 17, 1981
    Assignee: UOP Inc.
    Inventor: Edwin H. Homeier
  • Polymeric reaction products of poly(alkoxyalkylene)amines and epihalohydrins
    Patent number: 4252746
    Abstract: Novel compositions of matter comprise the reaction products of one molar proportion of poly(oxyalkylene)amines with from about 0.5 to about 2.0 molar proportion of epihalohydrins at a temperature from about 40.degree. C. to about 150.degree. C. in the presence of an inorganic base.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: February 24, 1981
    Assignee: UOP Inc.
    Inventor: Gary Kwong
  • Polymeric reaction products of alkoxyalkylamines and epihalohydrins
    Patent number: 4252745
    Abstract: Novel compositions comprise the polymeric reaction products of primary alkoxyalkylamines with epihalohydrins at temperatures in the range from about 40.degree. C. to about 150.degree. C. in the presence of an inorganic base. Such reaction products may be used as sedimentation and degradation inhibitors in hydrocarbon oils, antifoulants, carburetor detergents, lubricant additives, and corrosion inhibitors.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: February 24, 1981
    Assignee: UOP Inc.
    Inventors: Gary Kwong, Joseph Levy
  • Preparation of diphenylmethane
    Patent number: 4251675
    Abstract: Diphenylmethane is synthesized by reacting benzene and benzyl chloride at elevated temperatures in a Friedel-Crafts type reaction using catalytic amounts of a Friedel-Crafts metal halide catalyst such as ferric chloride whereby the desired product is obtained with a good selectivity and a high conversion rate.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: February 17, 1981
    Assignee: UOP Inc.
    Inventor: Dusan J. Engel
  • Preparation of support matrices for immobilized enzymes
    Patent number: 4250080
    Abstract: Support matrices for immobilized enzymes may be prepared by treating a solid porous, inorganic, water-insoluble support such as an alumina with a prepolymerized polymeric compound such as polystyrene. After treating the solid support the resultant organic-inorganic composite may then be derivatized, one example of derivatization being nitration of the composite with nitric acid and reducing the nitro-substituted composite to form an aminopolystyrene alumina composite. This composite is then treated with a bifunctional monomer to form a copolymeric material which is substantially entrapped in the pores of the solid support, said copolymeric material containing functionalized pendent groups to which an enzyme may be coupled to form an immobilized enzyme conjugate.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: February 10, 1981
    Assignee: UOP Inc.
    Inventors: Ronald P. Rohrbach, George W. Lester
  • Method of purification of thermally stable enzymes
    Patent number: 4250263
    Abstract: A composition comprising intracellular or extracellular glucose isomerase may be purified by a method comprising heat treatment at a temperature from about 40.degree. C. to about 80.degree. C. The resultant enzyme solution, when utilized to prepare an immobilized enzyme system, is operationally equivalent to glucose isomerase purified by the traditional physico-chemical methods.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 10, 1981
    Assignee: UOP Inc.
    Inventor: Vida Winans
  • Regeneration of an immobilized enzyme system
    Patent number: 4250260
    Abstract: A method for regenerating an immobilized enzyme system comprises treating the system with an acid, removing excess acid, treating the system with a bifunctional organic reagent which furnishes a pendant group, removing excess of said bifunctional reagent, and immobilizing fresh, active enzyme.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: February 10, 1981
    Assignee: UOP Inc.
    Inventors: Ronald P. Rohrbach, Joseph Levy
  • Preparation of tertiary amines
    Patent number: 4250115
    Abstract: Tertiary amines may be prepared by reacting an olefinic compound, carbon monoxide, hydrogen and a nitrogen-containing compound such as ammonia, a primary amine or a secondary amine in the presence of a rhodium or ruthenium-containing catalyst at temperatures in the range of from about 50.degree. to about 350.degree. C. and a pressure in the range of from about 10 to about 300 atmospheres.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: February 10, 1981
    Assignee: UOP Inc.
    Inventor: Tamotsu Imai
  • Regeneration of a immobilized enzyme system
    Patent number: 4248969
    Abstract: A method for regenerating an immobilized enzyme system comprises treating the deactivated system with a base, removing excess base, treating the system with a bifunctional organic reagent which furnishes a pendant group, removing excess of said bifunctional reagent, and immobilizing fresh, active enzyme.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: February 3, 1981
    Assignee: UOP Inc.
    Inventor: Gene K. Lee